Soft-collar fastener



UNITED STATES PATENT OFFICE.

DANIEL WILLIAM MACMILLAN, F :PROVIDEN'CIEI, RHODE ISLAND.

SOFT-COLLAR FASTENER.

To all whom t may concern.'

Be it known that I, DANIEL WILLIAM MACMILLAN, a citizen `of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Soft-Collar Fasteners, of which' the followthe fastener and when metal points are used on the fastener, they Aare liable to tear or damage the collar.

The object of my invention is to improve the construction of a soft collar fastener or holder, whereby when the fastener or holder is in place on the ends of the collar, the ends of the fastener are gripped to the ends of the collar by a three point spring frictional contact, in each end of the fastener, thereby more firmly and positively securing the fastener to the collar, than has heretofore been done and without injury to 4the collar.

A further object of my invention is to simplify the construction of soft collar fasteners thereby reducing the cost of manu' 4facturing.` the same.

My invention consists inthe peculiar and novel construction of `a soft collar fastener having a three point spring friction'al contact in each end and details of construction,

as will be more fully/'set forth hereinafter vfront bar 'having a pocket in the back at and claimed.

Figure 1 is an edge view of my improved soft kcollarfastener in the normally closed position.

longitf' n':'il sectional, vie'w ne 3, 3 of Fig'. 2. Fig. 4 is a transverse sectional view taken on line 4, 4 of Fig. 1.

Fig. 5-is a transverse sectional view taken on line 5,'5of Fig. 1 and j Fig. 6 is a plan view of the blank from which the rigidy front bar is formed. Figs. 1, 2, 3 and 6 are enlarged and Figs. 4 and 5 arestill further enlarged. In the drawings 7 indicates a curved rigid front 'bar and 8 a spring back bar. 4The specification of Letters Patent. Patented Nov, 23,1920, Applicatimmed september so, 1920. serial No. 413,904.

rigid front bar 7 is .formed from a blank as shown in Fig. 6, to have a curved front 9, longitudinal edge ribs 10, 10 on the back, folded over flaps 11, 11, on the lback at each end, rounded ends 12, 12 and central spring back. bar holding members 13, 13 at each side vand which are forced over from each side and down ontothe back bar, to hold the' same in place. The side ribs 10, 1() and the ends of the flaps 11, 11 form a pocket 14 in the back at each. end of front bar, each pocket having `three point contact edges 15 and 16, 1-6, as shown in Figs. 2, 3 and 4. The spring back bar 8 is of a Width to fit between the edge ribs 10, 10v and is` shaped at each side of the back bar holding member 13, 13 to have" an outwardly curved spring portion 17 merging into an inwardly curved portion 18 which in turn merges into a straight outwardly bent angular end 19, the curved portion 18 and lend 19 forming a heel 20 which enters the pocket 14, as shown in Fig. 3.

By this construction a strong and rigid front'bar is produced having smooth rounded ends for easy admission of the collar the ends of the collar are firmly fastened lor clamped between the heels 20, 20, of

the spring back bar 8 and the edges 15 and 16, 16 of the pockets 14, 14 thereby more firmly' and positively securing the collar fastener to the ends of the collar, Without injuring the collar, than has heretofore been done; also as the entire `construction consists of two parts only, the cost of construction is reduced to a minimum. l

Having thus described my 'invention I cla-im as new:

1. A soft collar fastener comprising a eachend, each pocket having end andside .edges forming three. point contact edges, a

thepfront bar, each end pocket having end and side edges forming three point contact edges, a curved spring back bar formed to have a heel for each pocket which enters the pocket adjacent the .end of thepocket, for the purpose as described, andmeans for securing the spring back bar to the rigid front bar.

3. A soft collar fastener comprising a curved rigid front bar having longitudinal back edge ribs and bent over end iaips forming rounded ends and end pockets in the back of the front bar, each end pocket hav ing end and side edges forming three point Contact edges a curved spring back bar 10 formed to hve angular ends and a heel for each pocket which enters the pocket adjacent v the end of the pocket, for the purpose as described, and means for securing the spring back bar to the rigid front bar, consisting of clamping members on the front bar over 15 the center portion of the back bar, as described.

In testimony whereof, I have signed my name to this specification.

DANIEL WILLIAM MACMILLAN. 

